Results 11 to 20 of about 210,603 (269)

Albumin–Methotrexate Prodrug Analogues That Undergo Intracellular Reactivation Following Entrance into Cancerous Glioma Cells

open access: yesPharmaceutics, 2021
A family of monomodified bovine serum albumin (BSA) linked to methotrexate (MTX) through a variety of spacers was prepared. All analogues were found to be prodrugs having low MTX-inhibitory potencies toward dihydrofolate reductase in a cell-free system ...
Itzik Cooper   +3 more
doaj   +1 more source

Thiol/disulfide homeostasis in gastritis with or without Helicobacter pylori

open access: yesInternational Journal of Medical Biochemistry, 2022
INTRODUCTION: In this study, it was aimed to evaluate how thiol/disulfide homeostasis is affected in Helicobacter pylori positive and negative gastritis and the efficiency of thiol/disulfide levels in the diagnosis of chronic gastritis. METHODS: Seventy
Yakup Dulgeroglu, Osman Bandirmali
doaj   +1 more source

Ischemia modified albumin level and thiol/disulfide homeostasis in the etiology of tinnitus

open access: yesInternational Journal of Medical Biochemistry, 2022
INTRODUCTION: Although many theories about the etiology of tinnitus have been proposed, it has not been fully clarified. In this study, we investigated the role of ischemia in the etiology of tinnitus.
Hüseyin Kurku   +4 more
doaj   +1 more source

Redox-Responsive Comparison of Diselenide and Disulfide Core-Cross-Linked Micelles for Drug Delivery Application

open access: yesPharmaceutics, 2023
In this study, diselenide (Se–Se) and disulfide (S–S) redox-responsive core-cross-linked (CCL) micelles were synthesized using poly(ethylene oxide)2k-b-poly(furfuryl methacrylate)1.5k (PEO2k-b-PFMA1.5k), and their redox sensitivity was compared. A single
Sonyabapu Yadav   +8 more
doaj   +1 more source

NO, thiols and disulfides [PDF]

open access: yesFEBS Letters, 1993
The chemical nature of the messenger molecule, nitric oxide (NO), and especially its reactivity towards thiol groups and disuifides, could explain, at least partly, its intervention in so many different biological processes. NO can be regarded as the smallest molecule suitable for electron transport in biological systems. The S‐nitrosation reaction and
Girard, Pierre, Potier, Pierre
openaire   +2 more sources

Protein disulfides and protein disulfide oxidoreductases in hyperthermophiles [PDF]

open access: yesThe FEBS Journal, 2006
Disulfide bonds are required for the stability and function of a large number of proteins. Recently, the results from genome analysis have suggested an important role for disulfide bonds concerning the structural stabilization of intracellular proteins from hyperthermophilic Archaea and Bacteria, contrary to the conventional view that structural ...
Rudolf, Ladenstein, Bin, Ren
openaire   +2 more sources

α-Conotoxin Peptidomimetics: Probing the Minimal Binding Motif for Effective Analgesia

open access: yesToxins, 2020
Several analgesic α-conotoxins have been isolated from marine cone snails. Structural modification of native peptides has provided potent and selective analogues for two of its known biological targets—nicotinic acetylcholine and γ-aminobutyric acid ...
Adam C. Kennedy   +5 more
doaj   +1 more source

A native chemical chaperone in the human eye lens

open access: yeseLife, 2022
Cataract is one of the most prevalent protein aggregation disorders and still the most common cause of vision loss worldwide. The metabolically quiescent core region of the human lens lacks cellular or protein turnover; it has therefore evolved ...
Eugene Serebryany   +7 more
doaj   +1 more source

Assigning function to active site residues of Schistosoma mansoni thioredoxin/glutathione reductase from analysis of transient state reductive half-reactions with variant forms of the enzyme

open access: yesFrontiers in Molecular Biosciences, 2023
Thioredoxin/glutathione reductase (TGR) from the platyhelminthic parasitic worms has recently been identified as a drug target for the treatment of schistosomiasis.
Madison M. Smith, Graham R. Moran
doaj   +1 more source

Dynamic thiol/disulfide homeostasis in serum of patients with generalized vitiligo [PDF]

open access: yesArchives of Biological Sciences, 2019
Vitiligo is a multifactorial disorder commonly associated with hypo-/depigmentation in the skin and may influence both children and adults psychologically because of the notable leopard-skin-like appearance.
Pektaş Gökhan   +6 more
doaj   +1 more source

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